US Patent Issued to L'OREAL on Aug. 19 for "Composition comprising two particular oxidation dye precursors, and a particular carboxylic acid" (French Inventors)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,408, issued on Aug. 19, was assigned to L'OREAL (Paris).

"Composition comprising two particular oxidation dye precursors, and a particular carboxylic acid" was invented by Julie Blanc (Saint-Ouen, France) and Robin Protat (Saint-Ouen, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a composition comprising at least one oxidation coupler chosen from 6-hydroxybenzomorpholine of formula (I), one of its addition salts, its solvates and/or the solvates of its salts, at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), one of its addition salts, its solvates and/or the solvates of its salts, and ...